Would anything dangerous happen if I were to connect the terminal of a 6V lantern battery and the opposite terminal of another 6V lantern battery? - Quora
Energizer 529 Industrial 6 Volt Lantern Battery | Battery Mart
Rayovac 926D 12V Screw Terminals GP Lantern Battery | Kaufman Company Inc.
6V Lantern Spring Batteries, 2 Pack | Rayovac Heavy Duty - 944-2R